Why can't we turbocharge a 3s-ge?, Compression ratio related Options

[dudeofchaos]

I know that the 3s-ge engine has a higher compression ratio than the 3s-gte (which I guess means that the pistons' head are thiner right?), but what does it change so that we can't (or shall not) turbocharge the 3s-ge?
Is it because it would (I don't know) be too much compressed exhaust gases for the turbo to hold?

BTW: what does the last number in the compression ratio mean? (Like in 10:3:1)

This post has been edited by dudeofchaos: Jun 26, 2011 - 10:51 PM

[3WayStunna]

Wow alot of one sided responses and generic answers.
Serious answer for ya...

First off you CAN turbocharge the 3sge in ANY form.

Putting aside money and cost here are some thing though, that you might want to consider first.

Compression ratio = to make sure you dont blow up your engine some low comp 3sgte pistons would be in order
Headgasket = nobody really knows the strength of the 3rd/4th gen 3sge stock headgasket...keep it safe and get a newer one
Why? you might ask..simple..higher cylinder temps and pressure that the stock one might not be able to handle

Fueling = There is no way the stock 3sge fuel system can even dare to support an person desire for speed and high HP numbers. Dont get me wrong
you can use the stock injectors and/or fuel pump. You just have to consider that they will eventually run out of steam the higher your boost
then you have to think about running lean. The stock injectors on the 3rd gne 3sgte are 540's and have been known to take that
engine into the 300+ bhp range. Suffice to say, you wont see those numbers on the stock injectors (or fuel pump) of the 3sge.

Intake charge air and intercooling = actually this is an area of advantage for the 3sge. WHY?? Well its a known thing that the 3sgte's center feed
design causes lean conditions in 2 of the cylinders. Basically equating to poor performance. With the 3sge's side
feed design it offers a more even distribution of air to all cylinders (IMHO the 4th gens are best). Also easier
or less complex intercooler pipe routing.

ECU work and tuning = Your going to need an aftermarket ECU to control all these great changes you are making to your engine. Too many choices
out there to cover in this thread or post...read some reviews ask opinions and such, and go fourth with your turbo 3sge

Now there are a few other things to consider but i just wanted to cover the basic stuff(still things such as new clutch, maybe new diff, gauges, possible better cooling/oiling etc, etc.) ...

Now knowing all of this, why would you want to do all of this work? To be honest, it would be a waste of time considering that the 1st, 2nd, 3rd gen 3sge's have a turbocharged varient anyways and even though there is no turbocharged 4th gen 3sge, there are the 4th and 5th gen 3sgtes which are vastly superior to the previous gens. Honestly only unless you want to have a turbocharged VVTI 4cylinder, or just so happen to have a spare 3sge lying around and you are bored or something, its a moot thing to do.

Would be cool to see a (done right) turbo charged blacktop though...a friend of mine back in okinawa had one in his altezza and it was pretty sweet sounding...god i love the sound of that thing....but hey he had money to burn and didnt want to bother with swapping in a 3sgte...and after hearing that car rev up, man i would do it in a heart beat...wait, actually i am, lols....